Double-local fan fault diagnosis and automatic switching closedown integrated device

Abstract

The invention discloses a twin portable blower failure diagnosis and automatic switchover closedown integration device. The device comprises a main board, a locking, a display board and a distribution block. The control main board is connected with the display board, the display board is connected with the distribution block through a terminal, the sensor signal input terminals on the control main board, electric relay control output and 36V alternating current input terminals are connected with the distribution block. Corresponding on-the-spot apparatus magnetic starters are controlled through gathering down-hole face of heading sensor signal output to monitor the operating status of main and sub portable blower and working area in order to realize collection mash gas fault location indication and twin portable blower automatic switchover control. The distribution block provides all input and output terminals of device. The circuit accords local safe claim, solves a series of difficult problems such as twin portable blower failure diagnosis and automatic switching and monitoring, mash gas fault location, wind, electric and gas reliable locking and so on for middle or small coal mines without monitoring executive supervisor, and can be abroad used in mash gas mines.

Description

technical field [0001] The invention relates to a safety monitoring device, in particular to an integrated device for gas fault location, double local fan automatic switching, locking and control of double local fan fault diagnosis and automatic switching and locking. Background technique [0002] In the actual production of gas mines, in addition to the ventilation of the main fan of the coal mine, each working face also needs to be ventilated by local fans. According to the requirements of national coal mine safety regulations, coal mine ventilation cannot be interrupted, and it must be powered by dual power sources. However, in the KJ66 and KJ69 systems with strong monitoring functions, the fault diagnosis and automatic switching of double office fans are not involved. In the KJ4 monitoring system, only harmful gases can be monitored but not controlled. When the monitored concentration exceeds the limit, manual processing is required. Existing similar products use disc...

AI Technical Summary

Problems solved by technology

Existing similar products use discrete components or single-chip microcomputers as the control core. The main problems are: some main and auxiliary fan switching is not effective or intermittent, some have no gas fault location, some fans automatically switch and lock, and the fan The locking of the power supply switch of the excavation face and the monitoring of the running status of the fan are independent of each other.

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